Adjustable window-screen.



Nu. 66|,567. Patented Nov. I3, I900.

J. K. unosnnowu.

ADJUSTABLE wmnow SCREEN {Application filed Feb. 16, 1900.) (no Model.) 2Sheets-Sheet I.

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No. 66!,567. 6 I

J. K. uunannowu.

ADJUSTABLE WINDOW SCREEN.

(Application filed Feb. 18, 1900.)

(No Model.)

Patented Nov. [3, I900.

2 Sh66ts--Shaet 2.

UNITED STATES PATENT OFFICE.

JOHN K. UNDERDOWVN, OF PHILADELPHIA, PENNSYLVANIA;

ADJUSTABLE WINDOW-SCREEN.

SPECIFICATION forming part of Letters Patent No. 661,567, dated.November 13, 1900.

Application filed F r y 16, 1900. Serial No. 5 ,476. (No model.)

To ctZZ whom it may concern.-

Be it known that 1, JOHN K. UNDERDOWN, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented a certain new and useful Improvement inAdjustable Window-Screens, of which the following is a specification.

My invention relates to a new and useful improvement in adjustablewindow-screens, and has for its object to provide an adj ustable screenwherein the adjustable parts will be constructed of perforated material,so as to allow for the free passage of air therethrough, and toconstruct this screen in such a manner as to allow it to fit upon theparting-strip of the window-casing, so as to permit the raising andlowering of the window without necessitating the removal of the screen.

With these ends in view this invention consists in the details ofconstruction and combination of elements hereinafter set forth and thenspecifically designated by the claims.

In order that those skilled in the art to which this inventionappertains may understand how to make and use the same, the constructionand operation will now be described in detail, referring to theaccompanying'drawings, forming a part of this specification, in whichFigure 1 is a vertical section of a windowframe, showing my improvementsapplied thereto; Fig. 2, a horizontal section of a window-frame, showingmy screen in place upon the parting-strip; Fig. 3, a view of one of myadjustable screens, one of the boxes being in elevation and the other insection; Fig. 4, an enlarged cross-section of one of the boxes and aportion of the screen-frame; Fig. 5, an end View of a portion of theboxes,showing a slight modification applied thereto; Fig. 6, acrosssection of a portion of the window frame and screen with the samemodification applied thereto. Fig. 7 is a view similar to Fig. 4,showing a modification of the screen-frame. Fig. 8 is a cross-section ofone side of the v metal screen-frame, showing the position of frame, allparts being in their normal position.

In carrying out my invention as here embodied, A represents awindow-casing and B B the sash working therein.

0 is a screen-frame.

D D are boxes adapted to slide over the ends of the screen 0, and inpractice I prefer to make these boxes of some perforated sheet metal forthe purpose of allowing the free passage of air therethrough. Theseboxes can be made of one piece of material bent in the form shown inFig. 4, the pieces D D be ing bent over the top and bottom, so as toform a box only open at one end, wherein the screenframe 0 fits. Theouter edges of these boxes are formed, as shown in Fig. 4, with a grooveE. At the side of the groove, toward the outside of the window, anextension is made by the bending of the metal, so as to form a flange F,for the purpose hereinafter described.

G Gr are the parting-strips, formed with the window-casing A, and thegroove Eis adapted to fit upon these parting-strips, and by reason ofthe said groove being formed in the manner shown the inner surface ofthe screen and the parting-strip will be flush with each other,therebyallowing the sash B to be raised and lowered withoutnecessitating the removal of the screen. The flange F will abut againstthe outer surface of the parting-strip, thereby preventing the screenfrom being forced inward by wind or other means. A spring H is arrangedinside of the box D, being bent in the manner shown and fitting into aslot I, formed in the screen-frame C, and a pin J passed through thescreen-frame over the bent portion of the spring H, thereby holding thesame securely in place, but allowing for certain rocking of the springfor the purpose of better exertion of equal-pressure. The ends H of thespring bear against the closed end of the boxes and are bent inward, soas to form hooks, and the pins K, passing through the boxes, engagethese hookedendsI-I, thereby preventing any accidental removal of theboxes from the screen-frame, it being understood that the spring H inits normal position ceases to exert any pressure upon the boxes, andthereby holds the same in proper relation to the screen-frame. HandholdsL ICO 'are provided in the boxes for the proper manipulation ofthescreen.

' In Figs. 5 and 6 I have shown a slight modification wherein I providea spring M, secured to theflange F on its outside edge, so that when thescreen is in place upon the parting-strip the springs M will bearagainst the head 0, and thereby hold the screen more securely in place.

The advantages of my improvement are very obvious in that constructingthe box of perforated metal allows the free passage of air therethroughand also allows the same to be made cheaply and quickly and moredurable, and the parts being so few in number the whole screen can bemade at a small cost and at the same time exceedingly durable. It isalso understood that my screen can be reversed and placed upon the upperhalf of the parting-strip when it is desired to lower the upper sash.

In Figs. 7, 8, 9, and 10 I have shown a further modification, in whichthe screen-frame is made of metal and in which N represents sheet-m etalstrips, forming the ends and sides of the frame and are secured togetherat the corners by any suitable means. (Illustrated in Fig. 9 by rivetsP.) The outer edges of these metal strips N are bent into the form ofthe roll Q, the edge 01 of the roll coming to within a short distance ofthe flat portion of the strip N. The wire-cloth R is adapted to besecured upon the outer side of the metal strip Nthat is to say, the sideon which the roll Q is formed. Means for fastening this wire-cloth areprovided by punching out the pointed retainingpieces S from the metalstrip N at suitable intervals. These retaining-pieces S, after beingpressed through the wire-cloth, are bent over on the top of the same,thus retaining the cloth in place.

For the purpose of covering these retainingpieces S and for giving aneat appearance to the frame 1 provide a covering-strip T. Thiscovering-strip T is also a sheet-metal strip,

having a roll U formed on its outer edge.

This roll U is adapted to fit within the roll Q of the strip N. Theflattened portion of this roll passes through the opening V left betweenthe edge d of the roll Q on the fiat portion of thestrip N. This rollUis formedin such a way that when the covering-strip Tis forced downwardagainst the wire-cloth it will bear against the inner surface of theroll Q at the points a and b, and by reason of the end d of the roll Qbeing forced outward by the action of the inner roll U against thecurved portion 6 of the covering-strip T there will be caused sufficientfriction and spring action between the two members to retain thecovering-strip T in position shown in Fig. 7, which is its normalposition, there being no necessity for any other fastening whatsoever.

To remove the wire-cloth R for the purpose of renewing it, it isnecessary to simply raise each of the covering-strips T in the positionshown in Fig. 8, and by bending .up the retaining-pieces S the old clothcanbe easily removed and new cloth substituted, the retraining-piecesbeing bent back and the covering-strips T being forced downward intotheir normal position,when the screen is again ready for use. This metalframe will fit within the box D, the same as the wooden screenframe 0;but in this metal fram'el would do away with the pin J and slot I in thescreenframe and let the, spring H bear directly against the outersurface of the roll Q. To prevent the box D from coming off thescreenframe in this case, I provide the stops W, said stops being bentdownward at suitable inter'-,

vals after the frame is inserted within the box, and these will preventthe box from being accidentally removed from the frame. To remove theframe from the box, it is simply necessary to straighten out the stopsW.

The advantages of this construction are that the frames can be made verycheaply and at the same time exceedingly durable and that the wire-clothcan be easily replaced at any time by the owner, it requiring no specialskill or tool for the operation.

Of course I do not wish to be confined to the exact construction ofthese two metal strips, as slight modifications can be made in the samewithout departing from the spirit of my invention.

Having thus fully described my invention, what I claim as new and usefulis- 1. In an adj ustable screen, the combination of a screen proper withperforated boxes adapted to slide over each end of the screenframe,springs arranged within said boxes and adapted to exert pressureoutwardly upon the same, as specified.

2. In an adjustable screen, the combination of a screen proper withperforated boxes adapted to slide longitudinally over the ends of saidscreen, the outer ends of said boxes being closed and formed with agroove adapted to fit upon the parting-strip of the window-casing, saidgroove so formed that the inner face of the screen will be flush withthe inner sur face of the parting-strip so as to allow for the raisingand lowering of the window-sash past the screen, springs arranged withinsaid boxes and adapted to exert an outward pressure on the boxes, andpins arranged so as to engage the ends of the springs for preventing theaccidental removal of said boxes from the screenframe, substantially asshown and for the purpose specified.

3. As a new article of man ufacture,a screenframe having perforatedboxes adapted to slide over the ends thereof,.a groove E formed in theends of the outer edge of said boxes and adapted to fit upon theparting-strip of the window-casing in such manner as to allow the freeraising and lowering of the window-sash past the screen, a flange Fformed with the box to engage the outer surface of the partingstrip,springs H arranged within said boxes and adapted to press said boxesoutward,

some? 5;

hooks II formed on the ends of the springs, pins K passing through theboxes and engaging the hooks H preventing the removal of the boxes fromthe screen-frame, and handhold L formed in the boxes, substantially asshown and for the purpose specified.

4. In an adjustable screen, a screen-frame, perforated boxes adapted toslide upon the ends of said screen frame, a spring H arranged withinsaid boxes and adapted to press the same outward, pins passing throughthe boxes and engaging the ends of the springs H, a groove E anda flangeFformed in the edge of said boxes, a spring M secured to the outersurface of the flange F and adapted to exert pressure between an outerbead O and, the flange F, for the purpose of binding the screen securelyin place, substantially as shown and specified.

5. In combination with a screen of the character described, ascreen-frame, the sides and ends of which are made of sheet-metal stripssaid strips having flat portions, a roll formed on the outer edges ofsaid strips retaining devices for retaining the wire-cloth formed in theflat portions of said strips, covering-strips having fiat portionsadapted to cover the retaining devices and to pass between the end d ofthe roll and flat portion of the firstnamed strip into the roll thereof,a roll formed upon the outer edge of said covering-strip and adapted tofit inside of the roll of the first-named strip and to bear against theinner surface of the outer roll in such a manner as to cause sufficientfriction and spring action therebetween to hold the coveringstrip in itsnormal position, as specified.

In testimony whereof I have hereunto af-' fixed my signature in thepresence of two subscribing witnesses.

JOHN K. UNDERDOWN.

Witnesses:

N. SCHOFIELD, E. H. FORSYTH.

